/Engine/Source/Editor/UnrealEd/Public/ImportUtils/SkeletalMeshImportUtils.h
Backups the given SkeletalMesh into aFExistingSkelMeshData
namespace SkeletalMeshImportUtils { [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [FExistingSkelMeshData](API\Editor\UnrealEd\ImportUtils\FExistingSkelMeshData) > SkeletalMeshImportUtils::SaveExistingSkelMeshData ( [USkeletalMesh](API\Runtime\Engine\Engine\USkeletalMesh) * SourceSkeletalMesh, bool bSaveMaterials, int32 ReimportLODIndex ) }